<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JSP标准标签库</title>
</head>
<body>
  <form action="servlet" method="post">
    <input type="text" name="f1" placeholder="integer">
    <br>
    <input type="text" name="f2" placeholder="string">
    <br>
    <input type="submit" value="提交">
  </form>
</body>
</html>